Senior Network Security Engineer

Better Staff; Sydney; On-site; AUD 155,000 - 175,000; Full time

Job summary

Better Staff are seeking a Senior Fortinet Network Security Engineer to lead firewall migrations in Sydney. You will own design through cutover on enterprise Fortinet environments and provide L3 support onsite.

You'll work on large migration projects, upgrading FortiOS/FortiManager, writing HLD/LLD, and delivering end-to-end solutions in a hands-on role. The ideal candidate has strong networking (BGP) and Fortinet certifications.

Qualifications

• Proven hands-on experience with FortiGate, FortiOS and FortiManager: configuring, upgrading, migrating and troubleshooting.
• Direct involvement in large enterprise firewall migration projects (not just exposure or support).
• Experience writing HLD and LLD documentation and delivering them hands-on.
• Full migration lifecycle experience: design, planning, configuration, cutover validation, rollback and troubleshooting.
• Strong networking foundation, including BGP.

Responsibilities

• Designing and planning large-scale firewall migrations, including third-party firewall to FortiGate
• Producing High Level Designs (HLD) and Low Level Designs (LLD)
• Hands-on implementation and configuration of FortiGate, FortiOS and FortiManager
• Planning and executing cutovers, including validation and rollback
• Upgrading FortiOS and managing Fortinet estates through FortiManager
• Providing L3 troubleshooting for complex Fortinet environments, including advanced VPN issues

Skills

FortiGate

FortiOS

FortiManager

Firewall migrations

L3 troubleshooting

BGP

Tools

FortiAuthenticator

FortiProxy

FortiADC

Job description

Senior Fortinet Network Security Engineer(Firewall Migrations)
Sydney, NSW
$155,000 - $175,000 + Super
Permanent Opportunity

About the role

A growing Sydney based MSP arelooking for a genuinely hands‑on Fortinet engineer to join their team onsite on a permanent basis. You’ll be working on large enterprise firewall migration projects, owning the work from design through to cutover and providing L3 support for complex Fortinet environments.

This is a 100% project-focused role, so you’ll spend your time delivering, not maintaining. We’re after someone who has configured, upgraded, migrated and troubleshot Fortinet platforms in the real world, and can show it.

What you’ll be doing

• Designing and planning large-scale firewall migrations, including third-party firewall to FortiGate
• Producing High Level Designs (HLD) and Low Level Designs (LLD)
• Hands‑on implementation and configuration of FortiGate, FortiOS and FortiManager
• Planning and executing cutovers, including validation and rollback
• Upgrading FortiOS and managing Fortinet estates through FortiManager
• Providing L3 troubleshooting for complex Fortinet environments, including advanced VPN issues

About you

• Proven hands‑on experience with FortiGate, FortiOS and FortiManager: configuring, upgrading, migrating and troubleshooting
• Direct involvement in large enterprise firewall migration projects (not just exposure or support)
• Experience writing HLD and LLD documentation and delivering them hands‑on
• Full migration lifecycle experience: design, planning, configuration, cutover validation, rollback and troubleshooting
• Strong networking foundation, including BGP

Highly regarded

• Experience with FortiAuthenticator, FortiProxy and FortiADC
• Python scripting or automation to speed up migration work
• Fortinet certifications (NSE 4 / NSE 5 / NSE 7 or equivalent)
• Experience in telco or large enterprise environments